Evaluating himawari-8 cloud products using shipborne and CALIPSO observations:Cloud-top height and cloud-top temperature
Cloud-top height (CTH) and cloud-top temperature (CTT) retrieved from the Himawari-8 observations are evaluated using the active shipborne radar–lidar observations derived from the 31-day Clouds, Aerosols, Precipitation Radiation and Atmospheric Composition over the Southern Ocean (CAPRICORN) experi...
Published in: | Journal of Atmospheric and Oceanic Technology |
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2019
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Online Access: | https://research.monash.edu/en/publications/e6a9f72a-5065-4580-8e1f-93bad5b67119 https://doi.org/10.1175/JTECH-D-18-0231.1 https://researchmgt.monash.edu/ws/files/315540045/295069889_oa.pdf http://www.scopus.com/inward/record.url?scp=85076551698&partnerID=8YFLogxK |
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ftmonashunicris:oai:monash.edu:publications/e6a9f72a-5065-4580-8e1f-93bad5b67119 2024-09-15T18:37:07+00:00 Evaluating himawari-8 cloud products using shipborne and CALIPSO observations:Cloud-top height and cloud-top temperature Huang, Y. I. Siems, Steven Manton, Michael Protat, Alain Majewski, Leon Nguyen, Hanh 2019-12-02 application/pdf https://research.monash.edu/en/publications/e6a9f72a-5065-4580-8e1f-93bad5b67119 https://doi.org/10.1175/JTECH-D-18-0231.1 https://researchmgt.monash.edu/ws/files/315540045/295069889_oa.pdf http://www.scopus.com/inward/record.url?scp=85076551698&partnerID=8YFLogxK eng eng https://research.monash.edu/en/publications/e6a9f72a-5065-4580-8e1f-93bad5b67119 info:eu-repo/semantics/openAccess Huang , Y I , Siems , S , Manton , M , Protat , A , Majewski , L & Nguyen , H 2019 , ' Evaluating himawari-8 cloud products using shipborne and CALIPSO observations : Cloud-top height and cloud-top temperature ' , Journal of Atmospheric and Oceanic Technology , vol. 36 , no. 12 , pp. 2327-2347 . https://doi.org/10.1175/JTECH-D-18-0231.1 article 2019 ftmonashunicris https://doi.org/10.1175/JTECH-D-18-0231.1 2024-08-21T23:55:40Z Cloud-top height (CTH) and cloud-top temperature (CTT) retrieved from the Himawari-8 observations are evaluated using the active shipborne radar–lidar observations derived from the 31-day Clouds, Aerosols, Precipitation Radiation and Atmospheric Composition over the Southern Ocean (CAPRICORN) experiment in 2016 and 1-yr observations from the spaceborne Cloud–Aerosol Lidar with Orthogonal Polarization (CALIOP) cloud product over a large sector of the Southern Ocean. The results show that the Himawari-8 CTH (CTT) retrievals agree reasonably well with both the shipborne estimates, with a correlation coefficient of 0.837 (0.820), a mean bias error of 0.226 km (-2.5268C), and an RMSE of 1.684 km (10.0698C). In the comparison with CALIOP, the corresponding quantities are found to be 0.786 (0.480),-0.570 km (1.3438C), and 2.297 km (25.1768C). The Himawari-8 CTH (CTT) generally falls between the physical CTHs observed by CALIOP and the shipborne radar–lidar estimates. However, major systematic biases are also identified. These errors include (i) a low (warm) bias in CTH (CTT) for warm liquid cloud type, (ii) a cold bias in CTT for supercooled liquid water cloud type, (iii) a lack of CTH at ~3 km that does not have a corresponding gap in CTT, (iv) a tendency of misclassifying some low-/mid-top clouds as cirrus and overlap cloud types, and (v) a saturation of CTH (CTT) around 10 km (-408C), particularly for cirrus and overlap cloud types. Various challenges that underpin these biases are also explored, including the potential of parallax bias, low-level inversion, and cloud heterogeneity. Article in Journal/Newspaper Southern Ocean Monash University Research Portal Journal of Atmospheric and Oceanic Technology 36 12 2327 2347 |
institution |
Open Polar |
collection |
Monash University Research Portal |
op_collection_id |
ftmonashunicris |
language |
English |
description |
Cloud-top height (CTH) and cloud-top temperature (CTT) retrieved from the Himawari-8 observations are evaluated using the active shipborne radar–lidar observations derived from the 31-day Clouds, Aerosols, Precipitation Radiation and Atmospheric Composition over the Southern Ocean (CAPRICORN) experiment in 2016 and 1-yr observations from the spaceborne Cloud–Aerosol Lidar with Orthogonal Polarization (CALIOP) cloud product over a large sector of the Southern Ocean. The results show that the Himawari-8 CTH (CTT) retrievals agree reasonably well with both the shipborne estimates, with a correlation coefficient of 0.837 (0.820), a mean bias error of 0.226 km (-2.5268C), and an RMSE of 1.684 km (10.0698C). In the comparison with CALIOP, the corresponding quantities are found to be 0.786 (0.480),-0.570 km (1.3438C), and 2.297 km (25.1768C). The Himawari-8 CTH (CTT) generally falls between the physical CTHs observed by CALIOP and the shipborne radar–lidar estimates. However, major systematic biases are also identified. These errors include (i) a low (warm) bias in CTH (CTT) for warm liquid cloud type, (ii) a cold bias in CTT for supercooled liquid water cloud type, (iii) a lack of CTH at ~3 km that does not have a corresponding gap in CTT, (iv) a tendency of misclassifying some low-/mid-top clouds as cirrus and overlap cloud types, and (v) a saturation of CTH (CTT) around 10 km (-408C), particularly for cirrus and overlap cloud types. Various challenges that underpin these biases are also explored, including the potential of parallax bias, low-level inversion, and cloud heterogeneity. |
format |
Article in Journal/Newspaper |
author |
Huang, Y. I. Siems, Steven Manton, Michael Protat, Alain Majewski, Leon Nguyen, Hanh |
spellingShingle |
Huang, Y. I. Siems, Steven Manton, Michael Protat, Alain Majewski, Leon Nguyen, Hanh Evaluating himawari-8 cloud products using shipborne and CALIPSO observations:Cloud-top height and cloud-top temperature |
author_facet |
Huang, Y. I. Siems, Steven Manton, Michael Protat, Alain Majewski, Leon Nguyen, Hanh |
author_sort |
Huang, Y. I. |
title |
Evaluating himawari-8 cloud products using shipborne and CALIPSO observations:Cloud-top height and cloud-top temperature |
title_short |
Evaluating himawari-8 cloud products using shipborne and CALIPSO observations:Cloud-top height and cloud-top temperature |
title_full |
Evaluating himawari-8 cloud products using shipborne and CALIPSO observations:Cloud-top height and cloud-top temperature |
title_fullStr |
Evaluating himawari-8 cloud products using shipborne and CALIPSO observations:Cloud-top height and cloud-top temperature |
title_full_unstemmed |
Evaluating himawari-8 cloud products using shipborne and CALIPSO observations:Cloud-top height and cloud-top temperature |
title_sort |
evaluating himawari-8 cloud products using shipborne and calipso observations:cloud-top height and cloud-top temperature |
publishDate |
2019 |
url |
https://research.monash.edu/en/publications/e6a9f72a-5065-4580-8e1f-93bad5b67119 https://doi.org/10.1175/JTECH-D-18-0231.1 https://researchmgt.monash.edu/ws/files/315540045/295069889_oa.pdf http://www.scopus.com/inward/record.url?scp=85076551698&partnerID=8YFLogxK |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Huang , Y I , Siems , S , Manton , M , Protat , A , Majewski , L & Nguyen , H 2019 , ' Evaluating himawari-8 cloud products using shipborne and CALIPSO observations : Cloud-top height and cloud-top temperature ' , Journal of Atmospheric and Oceanic Technology , vol. 36 , no. 12 , pp. 2327-2347 . https://doi.org/10.1175/JTECH-D-18-0231.1 |
op_relation |
https://research.monash.edu/en/publications/e6a9f72a-5065-4580-8e1f-93bad5b67119 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1175/JTECH-D-18-0231.1 |
container_title |
Journal of Atmospheric and Oceanic Technology |
container_volume |
36 |
container_issue |
12 |
container_start_page |
2327 |
op_container_end_page |
2347 |
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1810481446160171008 |